Fuajarl and Rumburum have long been rivals as the two dominant symbols of The Elbas continent. Needless to say, when Achea, the Princess of Fuajarl, arrives in Rumburum to ask their king for support, she's met with a little friction. However, all that is instantly forgotten as Filo, human Edel Raids, attack Rumburum's royal family. As the moon is swallowed by the darkness, Achea is left with one final decision to make and it becomes such a heavy burden.